Schoolyard scraps rarely involve necromancy, but students at the Weardd Academy School for Responsible Re-animation aren’t your typical youths. In Corpsecraft ($0.99, iPad), you battle unruly classmates by tapping the puzzle grid to chain gruesome resources, which lets you send out waves of slathering undead creatures to attack. It’s creepy, crazy, and cool.

Bondage play with carvings of cute wooden animals and random objects may sound disturbing to some, though it’s hard not to take a liking to Zen Bound 2 ($0.99, Universal) once you get into it. Winding a string around each beautiful carving to paint its surface is an oddly relaxing, if somewhat bizarre activity. Few iOS puzzle games are as poetic or strange.

About as abstract as they come, Windowsill ($2.99, iPad) is one part physics toy and three parts puzzle game. Ferrying your blocky blue go-cart from one room to the next requires you to touch and interact with the strange environments to unlock the path ahead. Experimenting with the wondrous stage designs and figuring out exactly what to do is lots of fun.

Monsters Ate My Condo ($0.99, Universal) is bursting with psychedelic insanity, but beneath the chaos is a neat puzzle mechanic. You swap out colorful condos from a precarious tower to feed giant creatures while chaining combos. Keeping the beasties fed prevents them from smashing your structure to bits, though the mayhem quickly hits a hilarious crescendo.

One of the most striking hand-drawn adventure games out there, Machinarium ($4.99, iPad) stars a scrappy little robot struggling to escape a bleak world of mechanical oppression. Navigating the stunning environments throws you up against some challenging conundrums to solve, and the fantastic setting is memorable for both its charm and strangeness.

Those naughty humans are up to no good with their futile attempts to colonize the galaxy. Playing as the wrathful universe itself in No, Human ($2.99, iPad), your job is to strategically fling meteors across the cosmos in creative ways to destroy every satellite, space station, and ship launched into orbit – all with a humorous running commentary to boot.

Who knew that snot could be put to good use? Gesundheit! HD ($2.99, iPad) is an adorably weird puzzle game where you use your green nasal goo to tackle obstacles, hit switches, and lure hungry monsters (who actually eat the gnarly nose projectiles) to their doom. This upbeat adventure resides squarely at the intersection of grossness and greatness.

Contre Jour HD ($2.99, Universal) has a captivatingly dark, alien atmosphere, but it’s the way you tackle each puzzle stage that’s truly unique. Rather than moving your creepy eyeball critter around directly, you use you fingers to terraform the environment itself to speed the little fellow along. Detachable tentacles and other oddities help along the way.